# Active Licenses This is a maintenance tab, available only to the System User, that allows for management of MiVoice Office 400 CCS licenses. Because MiVoice Office 400 CCS Apps are browser based, it's possible to just close a browser without logging off any Apps running at the time. This means any active license associated with those Apps remain active when in fact they could be re-used elsewhere. Use this simple dialog to revoke any license that is no longer being used but remains active.
## Active license list All of the currently active MiVoice Office 400 CCS licenses will be listed here. You will see all licenses, for both wallboards and supervisors, and you can revoke one or more of them, regardless of what type they are. Just check each license you wish to revoke. Then click Apply. The checked licenses will be revoked immediately and after a few seconds any App still using one of those licenses will display an Login Error dialog like the one below. NOTE: If you check the Supervisor license that you are using it WILL be revoked and you will see the Login Error dialog shown above. Sorry, you'll just have to login again.
## Apply or Cancel Only when you click Apply will any checked licenses be revoked. Click Cancel to un-check all licenses.